<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<script>
			//演示了eval的用法
			var str="alert(3+2)";
			eval(str);
			var s2="while(true){document.write('aaaaa<br/>')}";
			eval(s2);
		</script>
	</head>
	<body>
	</body>
</html>
